Stockholders' Equity, Stock Repurchase Program and Treasury Stock (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Apr. 27, 2005
Stock Repurchase Program [Abstract]
Stock repurchase program, number of shares authorized to be repurchased (in shares)		666,666
Stock repurchase program, remaining number of shares authorized to be repurchased (in shares)	602,467
Treasury Stock [Abstract]
Shares repurchased to satisfy withholding tax obligations related to vested RSUs (in shares)	51,366
Aggregate costs of shares repurchased to satisfy withholding tax obligations related to vested RSUs	$ 128,000